So did Motorcraft come out with a one piece? I'm about to replace my COP's and wanted to change the plugs while was I there.

Not to my knowledge. The Champs are far superior in my opinion, and they are platinum plugs, so the replacement mileage is comparable to the OEM Motorcraft plugs. I'm on my second set now, and no major issues whatsoever. The first set even came out easier than the Motorcraft originals. I highly recommend them. Truck just turned over 200,000 miles an perking along just fine.